They were heady times, Chris. The mania was palpable. I was five years old when they exploded here, and have older cousins by a few years (girls) who were bonkers for the group as were probably most adolescents of the day. The Beatles were on the radio half dozen times every hour. They were everywhere.
It's impossible to overstate Charlie's description..
I was 15 when The Beatles came to America, and my cousin in Wales had been sending records over for some time. The mid 1960's was the start of a social, political, sexual and every other kind of upheaval one could imagine. It was a revolution in style and thinking. Young people were speaking out about issues as never before, and The Beatles, and later, other groups of the British Invasion, were at the forefront.
It's hard to make anyone who did not live through those times realize the importance and impact of the music.. it was a phenomenon!